<?php
/*
 * Smarty-Light plugin
 *
 * Type:     function
 * Name:     cycle
 * Version:  1.3
 * Date:     May 3, 2002
 * Author:   Monte Ohrt <monte@ispi.net>
 * Credits:  Mark Priatel <mpriatel@rogers.com>
 *           Gerard <gerard@interfold.com>
 *           Jason Sweat <jsweat_php@yahoo.com>
 * Purpose:  cycle through given values
 * Input:    name = name of cycle (optional)
 *           values = comma separated list of values to cycle,
 *                    or an array of values to cycle
 *                    (this can be left out for subsequent calls)
 *           reset = boolean - resets given var to true
 *           print = boolean - print var or not. default is true
 *           advance = boolean - whether or not to advance the cycle
 *           delimiter = the value delimiter, default is ","
 *           assign = boolean, assigns to template var instead of
 *                    printed.
 * Examples: {cycle values="#eeeeee,#d0d0d0d"}
 *           {cycle name=row values="one,two,three" reset=true}
 *           {cycle name=row}
 * Credit:   Taken from the original Smarty
 *           http://smarty.php.net
 */
function tpl_function_cycle($params, &$tpl) {
	static $cycle_vars;
	extract($params);

	if (empty($name))
		$name = 'default';

	if (!isset($print))
		$print = true;

	if (!isset($advance))
		$advance = true;		

	if (!isset($reset))
		$reset = false;		

	if (!in_array('values', array_keys($params))) {
		if(!isset($cycle_vars[$name]['values'])) {
			$tpl->trigger_error("cycle: missing 'values' parameter");
			return;
		}
	} else {
		if(isset($cycle_vars[$name]['values']) && $cycle_vars[$name]['values'] != $values ) {
			$cycle_vars[$name]['index'] = 0;
		}
		$cycle_vars[$name]['values'] = $values;
	}

	if (isset($delimiter)) {
		$cycle_vars[$name]['delimiter'] = $delimiter;
	} elseif (!isset($cycle_vars[$name]['delimiter'])) {
		$cycle_vars[$name]['delimiter'] = ',';
	}

	if(!is_array($cycle_vars[$name]['values'])) {
		$cycle_array = explode($cycle_vars[$name]['delimiter'],$cycle_vars[$name]['values']);
	} else {
		$cycle_array = $cycle_vars[$name]['values'];
	}

	if(!isset($cycle_vars[$name]['index']) || $reset ) {
		$cycle_vars[$name]['index'] = 0;
	}

	if (isset($assign)) {
		$print = false;
		$tpl->assign($assign, $cycle_array[$cycle_vars[$name]['index']]);
	}
		
	if($print) {
		$retval = $cycle_array[$cycle_vars[$name]['index']];
	} else {
		$retval = null;
	}

	if($advance) {
		if ( $cycle_vars[$name]['index'] >= count($cycle_array) -1 )
			$cycle_vars[$name]['index'] = 0;
		else
			$cycle_vars[$name]['index']++;
	}

	return $retval;
}
?>